MICROANATOMY

Detailed explanation-1: -Your olfactory nerve is the first cranial nerve (CN I). This nerve enables your olfactory system and sense of smell. Cranial nerve 1 is the shortest sensory nerve . It starts in your brain and ends in the upper, inside part of your nose.

Detailed explanation-2: -The axons projecting from the olfactory receptor cells via the olfactory nerve terminate within the olfactory bulb. The olfactory bulb is the main relay station within the olfactory pathway. Information from the receptor cells is passed to cells whose projections make up the subsequent olfactory tract.

Detailed explanation-3: -It is the shortest of the cranial nerves and passes from its receptors in the nasal mucosa to the forebrain. It enters the skull through the cribriform plate of the ethmoid bone. It then sends its impulses to be interpreted at various brain regions including the temporal lobe, amygdala, and entorhinal cortex.

Detailed explanation-4: -The olfactory nerve is sensory in nature and originates on the olfactory mucosa in the upper part of the nasal cavity. From the olfactory mucosa, the nerve (actually many small nerve fascicles) travels up through the cribriform plate of the ethmoid bone to reach the surface of the brain.